Blowpipe.



No. 63 M).

L. A TIN.

BLOWPIPEI UNITE v. STATES PATENT IQFFIQE.

LLOYD AUSTIN, OF ANAOONDA, MONTANA, ASSIGNOR OF ON E-HALF TO JOHN B. SADTER, OF SAME PLACE.

BLOWPIPE.

SPECIFICATION forming part of Letters Patent N0. 636,100, dated October 31, 1899.

Application filed une 16, 1897. Serial No. 641,026. (No model.)

To all whom, it may concern:

Be it known that I, LLOYD AUSTIN, a citizen of Great Britain, residing at Anaconda, in the county of Deer Lodge, State of Montana, have invented a new and useful self-acting blowpipe for the use of jewelers, dentists, assayers, and for all purposes where a blowpipe is used in soldering and brazing, of which the following is a specification.

This invention is an improvement in blowpipe-burners in which the flame is derived from liquid fuel gasified by heat. Its objects are to construct a blowpipe-burner wherein the stream of gas ejected will be even and continuous and which blowpipe will retain its heat for along time and contain a sufficient supply of gasified fuel to enable the torch to be quickly ignited when it is to be used again; also, to protect the liquid-fuel reservoir from the heat and so connect it with the heating and gas-storing chambers that the pressure of the gas therein will control the escape of the liquid thereinto, whereby only such quantity of liquid as is needed tokeep up a steady flow of gas will be supplied to the heating-chamber.

The invention therefore consists in the novel construction and combinations of parts hereinafter claimed, and the accompanying drawings illustrate the best form of blowpipeburner now known to me.

Referring to said drawings, which form part of the present specification, by figures and letters of reference marked thereon, Figure 1 is a side elevationof the device. Fig. 2 is a section of the same.

A designates the hollow body of the blowpipe-burner, which is shown as globular and is formed of two hemispherical parts a a, which are united by threaded joints, as shown at a. While I prefer the globular shape of this body, it is not essential and may be of other desired form. This body is provided with a handle A, attached to the lower part, a, as shown.

Suitably supported within the lower part a of the body and above the pipe B is a partition 0, preferably dome or funnel shaped, whose edges almost contact the sides of the body and which divides the interior thereof into an upper gas-storing chamber 2 and a lower heating or gas-generating chamber 1.

Into the lower heating-chamber 1 projects a pipe B, which extends to about the center of the chamber and projecting outside the body extends outwardly and upwardly and supports a small reservoirB, which is adapted to contain gasolene, alcohol, or any other .suitable hydrocarbon which will gasify by heat. The reservoir maybe tightly closed by a cover b, screwed or otherwise secured thereon, as shown.

To the top of the dome-shaped partition 0 is connected a pipe D, which is curved down and extends through the partition and the heating-chamber 1 and is then bent outward to form a jet-pipe d. The jet (Z is preferably pointed away from the reservoir 5, so that the flame therefor-m will not contact the latter. The jet, however, is sufficiently close to the heating-chamber 1 to heat it by the flame.

The pipesB and D may be provided with valves 1) and 01, respectively, as indicated in the drawings, so that pipe B may be closed when the reservoir is being filled, and both pipes B and D may be closed when the blowpipe-burner is not in use. Thus a supply of compressed gas can be trapped and retained in the chambers 1 and 2.

Iii using the device a small quantity of gasolene or other hydrocarbon is admitted into the heating-chamber 1 below the dome C and heat is applied to the exterior of such chamber, vaporizing the gasolene therein, and the evolved gas escapes through pipe D and is capes therefrom slowly and only in sufficient quantities to maintain the proper supply of fuel in the heating-chamber.

It will be observed that the reservoir is sufficiently removed from the heating-chamber and the jet to prevent heating thereof, and consequently there is verylittle gas generated in the reservoir, and the implement is consequently much safer and better than the ordinary blowpipe-burners wherein the reservoir is subjected to heat,which produces an uneven pressure and flow of gas. Furthermore, asalarge portion of the pipe D is within the body it is kept warm while in use and the flow of gas facilitated.

Having thus described my invention, what I therefore claim as new, and desire to secure by Letters Patent thereon, is

1. The combination of the portable heating-chamber, the dome therein dividing it into upper and lower storage and heating chambers, a liquid-fuel reservoir, a supplypipe connecting the reservoir with the chamber below the dome, and a gas-exit pipe connected to the dome and leading to a jet-burner exterior to the heating-chamber,substantially as described.

2. The combination of the hollow body, the reservoir exterior thereto, the pipe leading from said reservoir into the lower part of the body, a dome in the body above the inner end of said pipe dividing it into an upper storing-chamber and lower heating-chamber, and a pipe connected to the apex of said dome and extending from the heating-chamber to a jet or burner exterior to the body, all substantially as described.

3. The combination in a self-acting blowpipe-burner of a sectional body, a dome therein dividing its interior into a storing-charm her for keeping warm the blowpipe when in use, and a lower heating-chamber; and an escape-pipe for the gas leading from the heating-chamber with a reservoir connected with the chamber, and a pipe through which the liquid passes from the reservoir into the chamber below the dome, all substantially as described.

Dated at Anaconda, Montana, June 9, A. D. 1897.

LLOYD AUSTIN,

In presence of- J. H. TAYLOR, A. I. SLOAN. 

